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Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
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Electrical Properties of Thiol-ene-based Shape Memory Polymers Intended for Flexible Electronics
Christopher L Frewin1, Melanie Ecker2, Alexandra Joshi-Imre3
1Department of Bioengineering, The University of Texas at Dallas, Richardson, TX 75080, USA. cfrewin@neuronexus.com.
Polymers
|May 22, 2019
Summary
Shape memory polymers (SMPs) offer tunable properties for flexible electronics. This study found that while curing affects permittivity, the resistivity of FS-SMP remains suitable for insulating applications in electronic devices.
Area of Science:
- Materials Science
- Polymer Chemistry
- Electrical Engineering
Background:
- Shape memory polymers (SMPs) are advanced materials with tunable mechanical and thermomechanical properties.
- These polymers are suitable for flexible electronics due to their UV-curable nature and shape-changing capabilities.
- The electrical and mechanical properties of SMP substrates significantly influence electronic circuit operation.
Purpose of the Study:
- To investigate the electronic properties, specifically permittivity and resistivity, of a thiol-ene/acrylate-based SMP.
- To evaluate these properties in different thermomechanical states, below and above the glass transition temperature.
- To assess the impact of different curing processes on the electrical characteristics of the SMP.
Main Methods:
- Fabrication of parallel plate capacitors using a fully softening (FS)-SMP composition.
- Determination of relative permittivity and resistivity at various temperatures relative to the glass transition temperature.
- Evaluation of surface quality using Corona-Kelvin metrology.
Main Results:
- The curing process influenced the electrical permittivity of the FS-SMP.
- Electrical resistivity was not significantly affected by the curing process.
- FS-SMP exhibited suitable resistivity for use as an insulating material in electronic applications.
Conclusions:
- FS-SMPs possess appropriate electrical resistivity for use as insulating substrates in flexible electronics.
- Understanding the influence of curing on permittivity is crucial for optimizing SMPs in electronic devices.
- These findings support the use of FS-SMPs in advanced flexible electronic systems.
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